1be39727f8
Full-detail natal charts: 21 bodies/points, 7 house systems, 11 aspect types with applying/separating, dignities, declination parallels, sect/balances/moon phase, offline city search with historical IANA time atlas, SVG wheel, and a written interpretation report. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
294 lines
12 KiB
Python
294 lines
12 KiB
Python
"""NATEGODD chart engine — Swiss Ephemeris natal chart computation."""
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import os
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import swisseph as swe
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swe.set_ephe_path(os.path.join(os.path.dirname(os.path.abspath(__file__)), "ephe"))
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FLG = swe.FLG_SWIEPH | swe.FLG_SPEED
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SIGNS = ["Aries", "Taurus", "Gemini", "Cancer", "Leo", "Virgo",
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"Libra", "Scorpio", "Sagittarius", "Capricorn", "Aquarius", "Pisces"]
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SIGN_GLYPHS = ["♈", "♉", "♊", "♋", "♌", "♍", "♎", "♏", "♐", "♑", "♒", "♓"]
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ELEMENTS = ["Fire", "Earth", "Air", "Water"] * 3 # index by sign % 4... careful: use sign_index % 4 mapping below
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SIGN_ELEMENT = ["Fire", "Earth", "Air", "Water"] # sign i -> SIGN_ELEMENT[i % 4]
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SIGN_MODE = ["Cardinal", "Fixed", "Mutable"] # sign i -> SIGN_MODE[i % 3]
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BODIES = [
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("Sun", swe.SUN, "☉"),
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("Moon", swe.MOON, "☽"),
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("Mercury", swe.MERCURY, "☿"),
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("Venus", swe.VENUS, "♀"),
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("Mars", swe.MARS, "♂"),
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("Jupiter", swe.JUPITER, "♃"),
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("Saturn", swe.SATURN, "♄"),
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("Uranus", swe.URANUS, "♅"),
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("Neptune", swe.NEPTUNE, "♆"),
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("Pluto", swe.PLUTO, "♇"),
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("Chiron", swe.CHIRON, "⚷"),
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("Ceres", swe.CERES, "⚳"),
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("Pallas", swe.PALLAS, "⚴"),
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("Juno", swe.JUNO, "⚵"),
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("Vesta", swe.VESTA, "⚶"),
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("North Node", swe.TRUE_NODE, "☊"),
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("Lilith", swe.MEAN_APOG, "⚸"),
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]
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HOUSE_SYSTEMS = {
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"P": "Placidus", "K": "Koch", "W": "Whole Sign", "E": "Equal",
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"O": "Porphyry", "C": "Campanus", "R": "Regiomontanus",
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}
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# aspect name -> (angle, base orb, is_major)
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ASPECTS = {
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"Conjunction": (0, 8.0, True),
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"Opposition": (180, 8.0, True),
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"Trine": (120, 7.0, True),
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"Square": (90, 7.0, True),
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"Sextile": (60, 5.0, True),
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"Quincunx": (150, 3.0, False),
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"Semisextile": (30, 2.0, False),
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"Semisquare": (45, 2.0, False),
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"Sesquiquadrate": (135, 2.0, False),
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"Quintile": (72, 1.5, False),
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"Biquintile": (144, 1.5, False),
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}
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ASPECT_GLYPHS = {
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"Conjunction": "☌", "Opposition": "☍", "Trine": "△", "Square": "□",
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"Sextile": "⚹", "Quincunx": "⚻", "Semisextile": "⚺", "Semisquare": "∠",
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"Sesquiquadrate": "⚼", "Quintile": "Q", "Biquintile": "bQ",
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}
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# Essential dignities (traditional rulers; modern rulers noted separately)
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RULERS = { # sign index -> traditional ruler
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0: "Mars", 1: "Venus", 2: "Mercury", 3: "Moon", 4: "Sun", 5: "Mercury",
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6: "Venus", 7: "Mars", 8: "Jupiter", 9: "Saturn", 10: "Saturn", 11: "Jupiter",
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}
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MODERN_RULERS = {7: "Pluto", 10: "Uranus", 11: "Neptune"}
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EXALTATIONS = {"Sun": 0, "Moon": 1, "Mercury": 5, "Venus": 11, "Mars": 9,
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"Jupiter": 3, "Saturn": 6, "North Node": 2}
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def norm(deg):
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return deg % 360.0
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def fmt_dms(lon):
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"""248.37 -> {'sign': 'Sagittarius', 'deg': 8, 'min': 22, 'sec': 12, 'text': "8°22'12\" Sagittarius"}"""
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lon = norm(lon)
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si = int(lon // 30)
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rem = lon - si * 30
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d = int(rem)
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m_f = (rem - d) * 60
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m = int(m_f)
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s = int(round((m_f - m) * 60))
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if s == 60:
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s = 0
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m += 1
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if m == 60:
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m = 0
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d += 1
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return {"sign": SIGNS[si], "sign_glyph": SIGN_GLYPHS[si], "sign_index": si,
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"deg": d, "min": m, "sec": s,
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"text": f"{d}°{m:02d}'{s:02d}\" {SIGNS[si]}"}
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def house_of(lon, cusps):
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"""Which house (1-12) a longitude falls in, given 12 cusp longitudes."""
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lon = norm(lon)
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for i in range(12):
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a, b = cusps[i], cusps[(i + 1) % 12]
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if a <= b:
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if a <= lon < b:
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return i + 1
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else: # wraps 360
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if lon >= a or lon < b:
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return i + 1
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return 12
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def dignity(name, sign_index):
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out = []
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if RULERS.get(sign_index) == name:
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out.append("Domicile")
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if MODERN_RULERS.get(sign_index) == name:
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out.append("Domicile (modern)")
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if RULERS.get((sign_index + 6) % 12) == name or MODERN_RULERS.get((sign_index + 6) % 12) == name:
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out.append("Detriment")
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if EXALTATIONS.get(name) == sign_index:
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out.append("Exaltation")
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if name in EXALTATIONS and EXALTATIONS[name] == (sign_index + 6) % 12:
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out.append("Fall")
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return out
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def compute_chart(year, month, day, hour, minute, second, ut_offset_hours,
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lat, lon, house_system="P", time_unknown=False):
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"""All angles in degrees. ut_offset_hours: local = UT + offset (e.g. +10 for AEST)."""
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ut_hour = hour + minute / 60.0 + second / 3600.0 - ut_offset_hours
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jd = swe.julday(year, month, day, ut_hour)
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if time_unknown:
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house_system = "W" # degrees meaningless for angles; solar whole-sign fallback handled below
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hs = house_system.encode() if isinstance(house_system, str) else house_system
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cusps_raw, ascmc = swe.houses(jd, lat, lon, hs)
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cusps = [norm(c) for c in cusps_raw[:12]]
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asc, mc = norm(ascmc[0]), norm(ascmc[1])
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vertex = norm(ascmc[3])
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bodies = []
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lons = {}
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speeds = {}
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for name, pid, glyph in BODIES:
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try:
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pos, _ = swe.calc_ut(jd, pid, FLG)
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eq, _ = swe.calc_ut(jd, pid, FLG | swe.FLG_EQUATORIAL)
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except swe.Error:
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continue
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L = norm(pos[0])
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lons[name] = L
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speeds[name] = pos[3]
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bodies.append({
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"name": name, "glyph": glyph, "lon": L, "lat": pos[1],
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"speed": pos[3], "retrograde": pos[3] < 0,
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"declination": eq[1],
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"position": fmt_dms(L),
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"house": house_of(L, cusps),
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"dignities": dignity(name, int(L // 30)),
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})
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# South Node = opposite the North Node
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if "North Node" in lons:
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sn = norm(lons["North Node"] + 180)
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bodies.append({"name": "South Node", "glyph": "☋", "lon": sn, "lat": 0.0,
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"speed": speeds["North Node"], "retrograde": speeds["North Node"] < 0,
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"declination": None, "position": fmt_dms(sn),
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"house": house_of(sn, cusps), "dignities": []})
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lons["South Node"] = sn
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# Day/night chart: Sun in houses 7-12 (above horizon) = day
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sun_house = house_of(lons["Sun"], cusps) if "Sun" in lons else 1
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is_day = 7 <= sun_house <= 12
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# Part of Fortune
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if "Sun" in lons and "Moon" in lons:
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pof = norm(asc + lons["Moon"] - lons["Sun"]) if is_day else norm(asc + lons["Sun"] - lons["Moon"])
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bodies.append({"name": "Part of Fortune", "glyph": "⊗", "lon": pof, "lat": 0.0,
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"speed": 0.0, "retrograde": False, "declination": None,
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"position": fmt_dms(pof), "house": house_of(pof, cusps), "dignities": []})
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lons["Part of Fortune"] = pof
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angles = [
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{"name": "Ascendant", "glyph": "AC", "lon": asc, "position": fmt_dms(asc)},
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{"name": "Midheaven", "glyph": "MC", "lon": mc, "position": fmt_dms(mc)},
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{"name": "Descendant", "glyph": "DC", "lon": norm(asc + 180), "position": fmt_dms(norm(asc + 180))},
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{"name": "Imum Coeli", "glyph": "IC", "lon": norm(mc + 180), "position": fmt_dms(norm(mc + 180))},
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{"name": "Vertex", "glyph": "Vx", "lon": vertex, "position": fmt_dms(vertex)},
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]
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lons["Ascendant"] = asc
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lons["Midheaven"] = mc
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aspects = compute_aspects(lons, speeds, time_unknown)
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# Balances (classic 10 planets only, weighted)
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weights = {"Sun": 2, "Moon": 2, "Mercury": 1, "Venus": 1, "Mars": 1,
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"Jupiter": 1, "Saturn": 1, "Uranus": 1, "Neptune": 1, "Pluto": 1}
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elem = {"Fire": 0, "Earth": 0, "Air": 0, "Water": 0}
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mode = {"Cardinal": 0, "Fixed": 0, "Mutable": 0}
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polarity = {"Positive": 0, "Negative": 0}
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for name, w in weights.items():
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if name not in lons:
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continue
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si = int(lons[name] // 30)
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elem[SIGN_ELEMENT[si % 4]] += w
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mode[SIGN_MODE[si % 3]] += w
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polarity["Positive" if si % 2 == 0 else "Negative"] += w
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# Declination parallels / contraparallels (orb 1°)
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decls = {b["name"]: b["declination"] for b in bodies if b["declination"] is not None}
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parallels = []
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names_d = list(decls)
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for i in range(len(names_d)):
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for j in range(i + 1, len(names_d)):
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d1, d2 = decls[names_d[i]], decls[names_d[j]]
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if abs(d1 - d2) <= 1.0:
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parallels.append({"a": names_d[i], "b": names_d[j], "type": "Parallel",
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"orb": round(abs(d1 - d2), 2)})
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elif abs(d1 + d2) <= 1.0:
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parallels.append({"a": names_d[i], "b": names_d[j], "type": "Contraparallel",
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"orb": round(abs(d1 + d2), 2)})
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# Moon phase
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phase = None
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if "Sun" in lons and "Moon" in lons:
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d = norm(lons["Moon"] - lons["Sun"])
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phases = ["New Moon", "Waxing Crescent", "First Quarter", "Waxing Gibbous",
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"Full Moon", "Waning Gibbous", "Last Quarter", "Waning Crescent"]
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phase = {"angle": round(d, 2), "name": phases[int(((d + 22.5) % 360) // 45)],
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"illumination": round((1 - __import__("math").cos(__import__("math").radians(d))) / 2 * 100, 1)}
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houses = [{"num": i + 1, "lon": c, "position": fmt_dms(c)} for i, c in enumerate(cusps)]
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return {
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"julian_day": jd,
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"house_system": HOUSE_SYSTEMS.get(house_system, house_system),
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"time_unknown": time_unknown,
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"is_day_chart": is_day,
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"bodies": bodies,
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"angles": angles,
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"houses": houses,
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"aspects": aspects,
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"parallels": parallels,
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"balances": {"elements": elem, "modalities": mode, "polarities": polarity},
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"moon_phase": phase,
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}
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ASPECT_POINTS = [b[0] for b in BODIES] + ["South Node", "Part of Fortune", "Ascendant", "Midheaven"]
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LUMINARIES = {"Sun", "Moon"}
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MINOR_POINTS = {"Ceres", "Pallas", "Juno", "Vesta", "Lilith", "Part of Fortune", "South Node"}
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def compute_aspects(lons, speeds, time_unknown=False):
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pts = [p for p in ASPECT_POINTS if p in lons]
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if time_unknown:
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pts = [p for p in pts if p not in ("Ascendant", "Midheaven", "Part of Fortune")]
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out = []
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for i in range(len(pts)):
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for j in range(i + 1, len(pts)):
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a, b = pts[i], pts[j]
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if {a, b} == {"North Node", "South Node"}:
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continue
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sep = abs(norm(lons[a]) - norm(lons[b]))
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if sep > 180:
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sep = 360 - sep
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best = None
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for name, (angle, orb, major) in ASPECTS.items():
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o = orb
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if major and (a in LUMINARIES or b in LUMINARIES):
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o += 1.0
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if (a in MINOR_POINTS or b in MINOR_POINTS):
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o = min(o, 3.0)
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if a in ("Ascendant", "Midheaven") or b in ("Ascendant", "Midheaven"):
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o = min(o, 6.0) if major else min(o, 2.0)
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diff = abs(sep - angle)
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if diff <= o and (best is None or diff < best[1]):
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best = (name, diff, angle, major)
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if best:
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name, orbv, angle, major = best
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sa, sb = speeds.get(a, 0.0), speeds.get(b, 0.0)
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applying = None
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if sa or sb:
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# faster body approaching exact angle?
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cur = norm(lons[a] - lons[b])
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if cur > 180:
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cur = 360 - cur
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rel = -(sa - sb)
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else:
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rel = sa - sb
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applying = (cur < angle and rel > 0) or (cur > angle and rel < 0)
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out.append({"a": a, "b": b, "aspect": name, "glyph": ASPECT_GLYPHS[name],
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"angle": angle, "orb": round(orbv, 2), "major": major,
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"applying": applying})
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out.sort(key=lambda x: (not x["major"], x["orb"]))
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return out
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